CVE-2026-97505
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store()
Currently, the __resource_resize_store() allows writing to the resourceN_resize sysfs attribute to change a BAR's size without checking for capabilities, currently relying only on the file access check.
Resizing a BAR modifies PCI device configuration and can disrupt active drivers. After the upcoming conversion to static attributes, it will also trigger resource file updates via sysfs_update_groups().
Add a CAP_SYS_ADMIN check to prevent unprivileged users from performing BAR resize operations.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 91fa127794ac1c48069479b9d45eb4c7378c0e30 < b722a607f858b9cd036075ea0efad553fb98e982 | affected |
| Linux | Linux | 91fa127794ac1c48069479b9d45eb4c7378c0e30 < cbf0628c0b7db86c5ce36451f088101546acbf1d | affected |
| Linux | Linux | 91fa127794ac1c48069479b9d45eb4c7378c0e30 < 25ec7f57deceec633f27bc93b615f951e2ade814 | affected |
| Linux | Linux | 6.1 | affected |
| Linux | Linux | 0 < 6.1 | unaffected |
| Linux | Linux | 6.12.111 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.53 <= 6.18.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/b722a607f858b9cd036075ea0efad553fb98e982
- https://git.kernel.org/stable/c/cbf0628c0b7db86c5ce36451f088101546acbf1d
- https://git.kernel.org/stable/c/25ec7f57deceec633f27bc93b615f951e2ade814
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